基于高速核信号采集系统的信号反射仿真研究  

Signal Reflection Simulation Based on Nuclear Signal Acquisition System

作　　者：刘福至 王磊[1] 庹先国[1,2] 刘明哲[1] 成毅[1] 

机构地区：[1]成都理工大学地质灾害防治与地质环境保护国家重点实验室,成都610059 [2]西南科技大学,绵阳621010

出　　处：《核电子学与探测技术》2014年第9期1089-1092,共4页Nuclear Electronics & Detection Technology

基　　金：国家自然基金青年基金(41104118)

摘　　要：在现代电路设计中,信号的反射几乎无处不在。深入理解信号反射产生的原因,并给出解决反射问题的技术方案,将有助于增强所设计系统的稳定性和可靠性[1]。论文以核信号采集系统为背景,阐述了信号反射产生的原因和消除反射的措施,并且借助于Cadence allegro PCB SI仿真工具对传输线不同延迟下和端接后的信号反射进行仿真分析。通过仿真分析证明减小传输线延迟和端接能够减小信号反射,为以后此类核信号采集系统的设计提供了有益借鉴。Signal reflectioncan be found almost everywhere in modern circuit design .An in-depth understand-ing of the causes of signal reflection and introducing solutions of signal reflection will help to increase stability and reliability of designed system .This paper illustrates the reasons of signal reflection and measures of remo -ving signal reflection in the background of nuclear signal acquisition system and conducting simulations of signal reflection which is under different transmission delay and terminationwith Cadence allegro PCB SI .The simula-tion analysis proves that reducing the transmission delay and impedance matching can reduce signal reflection . The simulation analysisprovides beneficial reference for the design of such systems .

关 键 词：核信号采集系统 信号反射 CADENCE ALLEGRO PCB SI 

分 类 号：TL822.6[核科学技术—核技术及应用]